I had been searching the net for a small powerful and especially quiet fan and came across the HT-900 E. He is small and powerful but quiet is different ... I wanted because on the ceiling, the heat is it for better distribution of convection heat of my stove in the living room and the floor remains relatively cold. This works with the fan also relatively well but the resulting noise is annoying over time, not least because you even have to turn the TV louder because the understanding of the text is no longer as given without a fan. Because of the lack of oscillation I can direct air flow only indirectly because he headed towards persons perceived unpleasantly cold after a short time he is since constantly acting and does not turn to the right or left or from bottom to top. The rotary switch in the so-called recessed grip is very difficult to Reach-U. operated. If you have the fans finally get to the first of the 3 fan levels is equal to the highest power and then you have to select the other, lower levels with fingertips. Listen now as I would look for the fly in the ointment, and as if it may be so bad because, to use a rotary switch but try it yourself and you will agree with me. What the hell, now I have the part and will probably take it in the summer with the camper. In the outside awning it is no longer hope to be as annoying as in the living room. I would buy him not again.